RefPtr<Document> DOMImplementation::createDocument(const String& type, Frame* frame, const URL& url)
{
// Plugins cannot take HTML and XHTML from us, and we don't even need to initialize the plugin database for those.
if (type == "text/html")
return HTMLDocument::create(frame, url);
if (type == "application/xhtml+xml")
return Document::createXHTML(frame, url);
#if ENABLE(FTPDIR)
// Plugins cannot take FTP from us either
if (type == "application/x-ftp-directory")
return FTPDirectoryDocument::create(frame, url);
#endif
// If we want to useImageDocumentForSubframePDF, we'll let that override plugin support.
if (frame && !frame->isMainFrame() && MIMETypeRegistry::isPDFMIMEType(type) && frame->settings().useImageDocumentForSubframePDF())
return ImageDocument::create(*frame, url);
PluginData* pluginData = 0;
PluginData::AllowedPluginTypes allowedPluginTypes = PluginData::OnlyApplicationPlugins;
if (frame && frame->page()) {
if (frame->loader().subframeLoader().allowPlugins(NotAboutToInstantiatePlugin))
allowedPluginTypes = PluginData::AllPlugins;
pluginData = &frame->page()->pluginData();
}
// PDF is one image type for which a plugin can override built-in support.
// We do not want QuickTime to take over all image types, obviously.
if (MIMETypeRegistry::isPDFOrPostScriptMIMEType(type) && pluginData && pluginData->supportsWebVisibleMimeType(type, allowedPluginTypes))
return PluginDocument::create(frame, url);
if (Image::supportsType(type))
return ImageDocument::create(*frame, url);
#if ENABLE(VIDEO)
// Check to see if the type can be played by our MediaPlayer, if so create a MediaDocument
// Key system is not applicable here.
DOMImplementationSupportsTypeClient client(frame && frame->settings().needsSiteSpecificQuirks(), url.host());
MediaEngineSupportParameters parameters;
parameters.type = type;
parameters.url = url;
if (MediaPlayer::supportsType(parameters, &client))
return MediaDocument::create(frame, url);
#endif
// Everything else except text/plain can be overridden by plugins. In particular, Adobe SVG Viewer should be used for SVG, if installed.
// Disallowing plug-ins to use text/plain prevents plug-ins from hijacking a fundamental type that the browser is expected to handle,
// and also serves as an optimization to prevent loading the plug-in database in the common case.
if (type != "text/plain" && ((pluginData && pluginData->supportsWebVisibleMimeType(type, allowedPluginTypes)) || (frame && frame->loader().client().shouldAlwaysUsePluginDocument(type))))
return PluginDocument::create(frame, url);
if (isTextMIMEType(type))
return TextDocument::create(frame, url);
if (type == "image/svg+xml")
return SVGDocument::create(frame, url);
if (isXMLMIMEType(type))
return Document::create(frame, url);
return HTMLDocument::create(frame, url);
}
